Help argument

src/main.rs

···
     // if key omitted or file not found, fall back to env
     // if env omitted, error out and quit
 
+    // if any args are `-h` || `--help` display help and quit
+    for arg in std::env::args() {
+        if arg == "-h" || arg == "--help" {
+        help();
+        return Err(())
+    }}
+
     return Ok(Config {
         handle: String::from(""),
         repo_name: String::from(""),